<mets:mets OBJID="eprint_56377" LABEL="Eprints Item" xsi:schemaLocation="http://www.loc.gov/METS/ http://www.loc.gov/standards/mets/mets.xsd http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-3.xsd" xmlns:mets="http://www.loc.gov/METS/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><mets:metsHdr CREATEDATE="2026-09-16T10:39:34Z"><mets:agent ROLE="CUSTODIAN" TYPE="ORGANIZATION"><mets:name>Repository UHAMKA</mets:name></mets:agent></mets:metsHdr><mets:dmdSec ID="DMD_eprint_56377_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:titleInfo><mods:title>SKRIPSI-2210015026-SALZABILLA SYAHRAJAB-REPOSITORY</mods:title></mods:titleInfo><mods:name type="personal"><mods:namePart type="given">SALZABILLA</mods:namePart><mods:namePart type="family">SALZABILLA SYAHRAJAB</mods:namePart><mods:role><mods:roleTerm type="text">author</mods:roleTerm></mods:role></mods:name><mods:abstract>Penelitian ini bertujuan untuk menentukan efek sitotoksik ekstrak metanol daun Rasamala&#13;
Altingia excelsa Noronha terhadap viabilitas sel kanker payudara MCF-7 secara in vitro.&#13;
Penelitian ini menggunakan metode penelitian eksperimental, yang kemudian terbagi&#13;
menjadi kelompok kontrol serta kelompok perlakuan dengan variasi konsentrasi ekstrak&#13;
39,06; 78,125; 156,25; dan 312,5 μg/mL. Karakterisasi senyawa aktif fitokimia dianalisis&#13;
menggunakan instrumen Gas Chromatography-Mass Spectrometry (GC-MS) yang&#13;
memperlihatkan dominasi senyawa golongan terpenoid dan ester asam lemak. Efek&#13;
perlakuan dievaluasi berdasarkan pengamatan kualitatif perubahan morfologi sel&#13;
menggunakan mikroskop inversi yang memperlihatkan adanya tanda kerusakan sel akibat&#13;
paparan ekstrak berupa gejala pengerutan (cell shrinkage), perubahan bentuk menjadi&#13;
membulat (cell rounding), serta akumulasi debris sel seiring peningkatan konsentrasi&#13;
perlakuan. Uji viabilitas kuantitatif dilakukan dengan metode MTT assay dan di lakukan&#13;
analisis data menggunakan uji One-Way ANOVA dan analisis regresi linear untuk&#13;
menentukan nilai Inhibitory Concentration 50 (IC50). Hasil penelitian menunjukkan bahwa&#13;
ekstrak metanol daun Rasamala mampu menurunkan viabilitas sel MCF-7 secara signifikan&#13;
seiring peningkatan konsentrasi perlakuan (dose-dependent manner) dengan p &lt; 0,0001.&#13;
Nilai IC50 ekstrak metanol daun Rasamala terhadap sel MCF-7 diperoleh sebesar 191,67&#13;
μg/mL yang menunjukkan aktivitas sitotoksik kategori sedang (moderate cytotoxic&#13;
activity).&#13;
Kata kunci: Altingia excelsa Noronha, aktivitas sitotoksik, IC50, MCF-7, MTT assay.</mods:abstract><mods:classification authority="lcc">R Medicine</mods:classification><mods:classification authority="lcc">Skripsi</mods:classification><mods:originInfo><mods:dateIssued encoding="iso8601">2026</mods:dateIssued></mods:originInfo><mods:originInfo><mods:publisher>Universitas Muhammadiyah Prof. DR. Hamka;PROGRAM STUDI PENDIDIKAN DOKTER</mods:publisher></mods:originInfo><mods:genre>Thesis</mods:genre></mets:xmlData></mets:mdWrap></mets:dmdSec><mets:amdSec ID="TMD_eprint_56377"><mets:rightsMD ID="rights_eprint_56377_mods"><mets:mdWrap MDTYPE="MODS"><mets:xmlData><mods:useAndReproduction>
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